Neck muscle twitching may be caused by physiological factors such as overwork or bad posture, or it may be caused by pathologic reasons such as local fasciitis, electrolyte deficiency, and nerve dysfunction. 1. Physiological factors: the accumulation of lactic acid or spasm of neck muscles caused by prolonged bad posture or overwork of the neck may cause twitching of the neck muscles. 2. Localized fasciitis: aseptic inflammation of neck muscles and fascia caused by prolonged head-down and strain injury can stimulate muscle twitching during neck activities. 3. Electrolyte deficiency: due to the lack of calcium and other electrolytes, the nervous system excitability increases, muscle spasm and continuous muscle twitching. 4. Nerve dysfunction: Nerve dysfunction due to various reasons, stimulate muscle contraction, can appear neck muscle twitching. Neck muscle twitching may also have other reasons, such as emotional excitement, etc., if the persistence of unrelieved, it is recommended to go to the hospital in a timely manner to improve the examination to clarify the cause of the disease, and then follow the doctor’s instructions to give targeted treatment or treatment, so as to avoid delaying the condition.